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Finding the Fourth Proportional to 284,698.02, 392,871.06 and 155,634.12

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Solution

The fourth proportional to 284,698.02, 392,871.06 and 155,634.12 is: 214,768.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,698.02 : 392,871.06 = 155,634.12 : x
  2. Step 2: Convert to fraction form
    284,698.02/392,871.06 = 155,634.12/x
  3. Step 3: Cross multiply
    284,698.02x = 392,871.06 × 155,634.12
  4. Step 4: Simplify right side
    284,698.02x = 61,144,141,696.57
  5. Step 5: Solve for x
    x = 61,144,141,696.57/284,698.02
  6. Step 6: Final answer
    x = 214,768.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.